Sway bar link sounds like somebody sending Morse Code with a small hammer. Lots and lots of taps.

Usually wrap the joint/s really tight with electrical tape (like 10-15 wraps) will snug up the joint and make it silent. Best way to confirm and also get some peace while waiting for the part to be shipped.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)